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United States Patent | 6,009,740 |
Devendorf ,   et al. | January 4, 2000 |
A system and method for deadweight calibrating a dynamometer having an output indicative of a motor action is provided. A weight cart has a base and defines a working axis non-parallel to the base. A hanger arm is adjustably mounted to the weight cart for movement relative to the weight cart along the working axis. The hanger arm has a loading surface for holding a plurality of calibration weights. The hanger arm loading surface is configured with respect to a loading surface on a dynamometer calibration arm such that movement of the hanger arm incrementally places the calibration weight on the calibration arm loading surface to simulate motor action and allow calibration of the dynamometer.
Inventors: | Devendorf; David P. (Oceanside, CA); Vetter; Richard (Yorba Linda, CA); Noguchi; Shinji (Irvine, CA); Kwok; Tennyson (Glendora, CA) |
Assignee: | Horiba Instruments, Inc. (Irvine, CA) |
Appl. No.: | 029030 |
Filed: | February 21, 1998 |
PCT Filed: | February 21, 1998 |
PCT NO: | PCT/US98/03299 |
371 Date: | February 21, 1998 |
102(e) Date: | February 21, 1998 |
PCT PUB.NO.: | WO98/37394 |
PCT PUB. Date: | August 27, 1998 |
Current U.S. Class: | 73/1.13 |
Intern'l Class: | G01L 001/00 |
Field of Search: | 73/1.08,1.09,1.11,1.13,865.6 |
4637481 | Jan., 1987 | Shoemaker | 73/1. |
Foreign Patent Documents | |||
000970155 | Oct., 1982 | SU | 73/1. |